For uncircumcised males, stimulation of the penis in this way comes from the pumping of the foreskin, in which the foreskin is held and slid up and down over the glans, which depending on foreskin length, is completely or partially covered and then uncovered in a rapid motion. Failure to honor a safeword is considered serious misconduct and could even change the sexual consent situation into a crime, depending on the relevant law, since the bottom has explicitly revoked his or her consent to any actions that follow the use of the safeword . The person sat upon may be in bondage, sexually submissive, or simply held down by the body-weight of the other person. Now facial cumshots are regularly portrayed in pornographic films, videos, magazines and internet web sites. Hentai is the various forms of Japanese pornography, including H-manga, H-anime, and H-computer games. As in B/D, the declaration of the Top/Bottom may be required, though sadomasochists may also play without any Power Exchange at all, with both partners equally in control of the play. They cited the Internet and text messaging as common ways of organising meetings. Although interracial pornography theoretically can apply to depictions of sexual activity between performers of any different racial groups, the term is most commonly used for heterosexual lesbian milfs sex acts between black and white performers. Comic books often gay hentai featured characters being tied up and tying others up, particularly in damsel in distress plots. Body parts including fingers, tongue and penis may be used for anonymous oral, vaginal and/or anal intercourse. Mutual masturbation can be practiced by males or females in pairs or groups with or without actually touching another person as indicated by the following examples of contact versus non-contact gaysex scenarios: Non-contact mutual masturbation Two people masturbating in the presence of each other but not touching. Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing.